Slitting means



July 12, 1932.

J. A. CAMERON Original Filed Jan m a v wmmw ghoentoz I Jamar J9? Carzerwz 4 roll having circumferential 'l atented July l2, 1932.

UNITED STATES- PATENT OFF-ICE? ems A. cannon, on :anooxmm, amw YORK, assrenon 'ro cannon mncnrivn comrnrv, or nnooxmm, NEW Yonx, A conromnon or mewroux sm'rr'me mime Original application med January 12, 1929, Serial No. 332,037. Divided and this application flled Lprilfi,

1930, Serial No. 442,754. Renewed December 10, 1931.

This invention relates to'means for slitting webs of flexible material into longitudinal sections in the type of slitting machines usually referred to as score-cut slitting-machines, and this application is a division of one filed J anua 12, 1929, Ser. No. 332,037,

now Patent No. 1,865,392, dated June 28th,

The main object and feature of the invention is to provide .means whereby a backingooves can be arranged to slit flexiblematerial into any desired widths notwithstanding the presence of said circumferential grooves.

In the accom anying drawing the invention is disclose in a concrete and preferred form in which:

H Fig. 1 is a somewhat diagrammatic side view, partly'in section, of a slitting and winding machine embodying the invention;

Fig. 2 is a top plan view of the backingroll shown in Fig. 1, with score-cut slitters shown associated therewith; 3 Fig. 3 is a detail sectional view substantially on the plane of line 3-3 of Fig. 2;

Fig. 4 is a detail sectional view substantially on the plane of line '44 of Fig. 3; and

7 Fig. 5 is a fragmentary view in perspec-' tive of one of the sheet-material rings and its anchoring means.

1 indicates a backing-roll which, in the form here shown, is'one of a pair of surfacewinding drums supporting a winding shaft 7. Score-cut slitters 3 cooperate with said backing-roll to slit web 4 into longitudinal strips. These features are well understood in the art. a

If now the backing-roll is provided with circumferential grooves as 31 and with ooves as 27, it will be lengthwise-extending seen that blank spaces must be left on the backing-roll to admitof engagement therewith of the score-cut slitters. This prevents the backing-roll from being entirely covered with grooves and limits the machine in that severed strips of any desired width cannot be produced in the same machine. To overcome this difliculty, I provide the backing-roll with an annular slitting member, preferably in the form of a sheet-material ring, 2", and

grooves, but, notwithstanding this, slitted' sections of different widths may be produced.

In order to anchor the ring in the position to which it has been adjusted, I provide said ring with a spring portion 28 having a .but-

ton29 at its outer end, which button can be slipped into an aperture like. 30 of which there may be any desired number in groove The grooves of the backing member are preferably of the type known as J ohnstone grooves and are disclosed in Patents Nos.

' 1,355,106 and 1,355,107.

I claim:

1. In a slitting machine, a I backing-roll having a circumferential paper-engaging surface provided with circumferential grooves, an annular slitting member mounted on andjadjustable over said paper-engaging surface in a direction lengthwise of the roll, means to secure said annular member in the position to which it is adjusted, and a slittin member mounted independently of the bee -roll and adjustable lengthwise of the latter to engage the annular member in its differently adjusted positions. I

2. In a slitting machine, a backing-roll having a circumferential paper-engaging surface provided with V circumferential grooves, a sheet-material ring mounted on and adjustable over said paperengaging surface in a direction-lengthwise of the roll, means to secure said ring in the position to which it is adjusted, and a score-cut slitting member mounted independently of the backing-roll and adjustable lengthwise of the latterto engage the ring in its differently adjusted positions.

3. In a slitting machine, a backing-roll having a circumferential paper-engaging surface provided with a plurality of circum- 'ferential grooves and a length\ vise-extending groove, an annular shttlng member mounted j on and adjustable over said paper-engaging surface in a direction lengthwise of theroll, locking means extending from the annular member and ad'ust'ably anchored in the 5 lengthwise-extendin groove, and a slitting member mounted in ep'endently of the backing roll and adjustable lengthwise of the latter to engage the annular member in its differently ad usted positions.

I 4. In a slitting machine, a backing-roll I having a circumferential paper-engaging surface provided with a plurality of circumferential grooves and a lengthwise-extending groove, a sheet-material rmg mounted on 35 and adjustable over said paper-engaging surface in a direction lengthwise of the roll,

locking means extending from the ring and adjustably anchored in the lengthwise-em tending groove, and a'seore-cut slitting member mounted independently of the backingroll and adjustable lengthwise of the latterto engage the ring in its difierently adjusted positions,

5. The combination of a roll having a circumferential paper-engaging surface provided with a groove, an annular slitting member mounted on and adjustable over said paperengaging surface in a direction lengthwise of the ro and locking means extending from the annular member and adj ustably anchored in the groove. 6. A backing member for score-cut slitting means comprising: a roll having a circumferential paper-engaging surface provided with a groove a sheet-material ring mounted on and adjustable over said paper-engaging surface in a direction lengthwise of the roll and locking means extendln' from the ring and ad'ustably anchored in t e groove. igned at the borough of Manhattan, county of New York, city and State of New York, this 3rd da of A ril, 1930. v 1 J AME A. CAMERON.- 

